【化】 seal without gasket; sealing without gaskets
naught; nonexistence; not; nothing; without; lack; zero
【医】 a-; leipo-; lipo-; non-
fill up; mat; pad; pillow; underlay
【医】 cushion; pad
airproof; pressure; pressurize; seal airtight; seal up
【计】 capsulation; encapsulation
【医】 lutation; lute
【经】 air proof; seals